Dual-ligand-functionalized dodeca-nuclear lanthanide–tungsten-cluster incorporated selenotungstates and fluorescence detection of dipicolinic acid (an anthrax biomarker)

Abstract

A series of rigid–flexible-ligand functionalized dodeca-nuclear lanthanide–tungsten heterometal cluster incorporated ring-shaped selenotungstates [H2N(CH3)2]16Na2[Ln4(H2O)6(HPDCA)2(HFMA)2W8O21][B-α-SeW9O33]4·29H2O [Ln = Ce3+ (1), Pr3+ (2), Nd3+ (3); H2PDCA = 2,3-pyrazine dicarboxylic acid, H2FMA = fumaric acid]...

Eu3+-MOF fluorescence sensor based on a dual-ligand strategy for visualised detection of an anthrax biomarker 2,6-pyridine dicarboxylic acid

“…At present, many methods have been investigated for detecting DPA, such as high-performance liquid chromatography, 10 polymerase chain reaction, 11 surface enhanced Raman spectroscopy, 12 immunoassays, 13 and fluorescence spectroscopy. 14,15 Fluorescent sensors have demonstrated application potentials because of their simple operation, high sensitivity, portability, high efficiency, and low cost. Among many photoluminescent sensors, metal–organic frameworks (MOFs), especially lanthanide-MOFs (Ln-MOFs), have displayed unique optical properties, including long fluorescent lifetimes, sharp emission, high colour purity, and large Stokes shifts.…”

An Unusual Bismuth–Antimony–Europium Cluster-Imbedded Polyoxotungstate and Its Bidirectional Luminescence Detection

“…In recent years, some investigations on PL detections of POM-based materials have been reported, , however, there are still few on POM-reversible responsive smart materials . Therefore, POT-based materials bidirectional PL detection have attracted the attention of more and more researchers due to their various applications in biosensing, nanodevices and medical detection .…”

Recent advances in lanthanide-based POMs for photoluminescent applications

“…The fabrication of biological fluorescent probes as a possible research hotspot has been widely adopted in various fields such as medical imaging, bacterial detection, and biological warfare agents. Recently, Zhao et al used the compound [Eu 4 (H 2 O) 6 (HPZDA) 2 (HFMA) 2 W 8 O 21 ][SeW 9 O 33 ] 4 18− to engineer a fluorescent sensor to detect the main marker of anthrax spores (DPA) in the aqueous solution with a detection limit of 3.83 μM (enhancing) 97 (Fig. 10).…”